/*
 Copyright (C) 2021 Eric Wasylishen

 This file is part of TrenchBroom.

 TrenchBroom is free software: you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by
 the Free Software Foundation, either version 3 of the License, or
 (at your option) any later version.

 TrenchBroom is distributed in the hope that it will be useful,
 but WITHOUT ANY WARRANTY; without even the implied warranty of
 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 GNU General Public License for more details.

 You should have received a copy of the GNU General Public License
 along with TrenchBroom. If not, see <http://www.gnu.org/licenses/>.
 */

#include "SignalDelayer.h"

#include <QDebug>
#include <QMetaMethod>
#include <QTimer>

namespace tb::ui
{

using namespace std::chrono_literals;

SignalDelayer::SignalDelayer(const std::chrono::milliseconds delay, QObject* parent)
  : QObject{parent}
  , m_timer{new QTimer{this}}
{
  m_timer->setInterval(delay);
  m_timer->setSingleShot(true);

  connect(m_timer, &QTimer::timeout, this, [&]() { emit processSignal(); });
}

SignalDelayer::SignalDelayer(QObject* parent)
  : SignalDelayer{0ms, parent}
{
}

void SignalDelayer::queueSignal()
{
  static const QMetaMethod processSignalMetaMethod =
    QMetaMethod::fromSignal(&SignalDelayer::processSignal);
  if (!isSignalConnected(processSignalMetaMethod))
  {
    qWarning() << "queueSignal called with nothing connected to processSignal";
  }

  m_timer->start();
}

} // namespace tb::ui
